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प्रश्न
What is a symbol? What information does it convey?
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उत्तर
A symbol is the short form which stands for the atom of a specific element or the abbreviations used for the names of elements.
It represents a specific element.
It represents one atom of an element.
A symbol represents how many atoms are present in its one gram (gm) atom.
It represents the number of times an atom is heavier than one atomic mass unit (amu) taken as a standard.
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संबंधित प्रश्न
Define: Elements-
What is the significance of the symbol of an element ? Explain with the help of an example.
The formula of the sulphate of an element M is M2(SO4)3
Write the formula of it
Chloride
Give the symbol of the following element:
Mercury
State the type of element for the following:
Sodium
Write the radical of the following valency:
Chlorine [Chloride]
State the valency of the following metallic element and write symbol with the valency
Chromium
State whether the following ion or radical given below of a non-metallic element exhibits valency: 1–, 2– or 3–. (write the ion or radical with the correct valency).
Bisulphite
State whether the following ion or radical given below of a non-metallic element exhibits valency: 1–, 2– or 3–. (write the ion or radical with the correct valency).
Sulphide
The first letter of a symbol is always written as a ______ letter and the second letter as a ______ letter.
